Masked cor triatriatum.
D000790:Angiocardiography; D016121:Brachiocephalic Veins / Q000002:abnormalities; D006328:Cardiac Catheterization; D002675:Child, Preschool; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000601:surgery*; D006801:Humans; D006976:Hypertension, Pulmonary / Q000151:congenital; D007223:Infant; D008946:Mitral Valve Stenosis / Q000151:congenital